/* 오피스타 site-wide styles */
:root{
  --bg:#0A0709; --bg-alt:#0D0A0C; --card:#121012; --card-alt:#131114;
  --border: rgba(255,255,255,0.08); --border-strong: rgba(255,255,255,0.14);
  --text:#F4F4F6; --text-dim:#A9A9B4; --text-mute:#8C8C97; --text-soft:#B6B6C0; --text-body:#C9C9D2;
  --accent:#FF1F2E; --accent-soft: rgba(255,31,46,0.14); --accent-line: rgba(255,31,46,0.4);
  --accent2:#FF6A74;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:radial-gradient(circle at 12% 0%,rgba(255,31,46,0.016),transparent 42%),radial-gradient(circle at 88% 28%,rgba(255,31,46,0.009),transparent 46%),radial-gradient(circle at 50% 100%,rgba(255,31,46,0.011),transparent 50%),var(--bg);background-attachment:fixed;background-color:var(--bg);color:var(--text);font-family:'Pretendard',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.6}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent2)}
img{max-width:100%;display:block}
summary::-webkit-details-marker{display:none}
summary{list-style:none;cursor:pointer}
table{border-collapse:collapse;width:100%}
.wrap{max-width:1240px;margin:0 auto;padding-left:clamp(20px,5vw,40px);padding-right:clamp(20px,5vw,40px)}
.wrap-narrow{max-width:900px;margin:0 auto;padding-left:clamp(20px,5vw,40px);padding-right:clamp(20px,5vw,40px)}
.section{padding:clamp(56px,7vw,100px) 0}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:clamp(56px,7vw,100px) 0}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(9,9,11,0.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.site-header .bar{display:flex;align-items:center;gap:clamp(12px,2vw,28px);flex-wrap:wrap;padding:14px clamp(16px,4vw,32px)}
.logo{display:flex;align-items:center;gap:9px;color:var(--text);font-weight:800;font-size:21px;letter-spacing:-0.02em}
.logo img{width:26px;height:26px;border-radius:6px}
.nav{display:flex;align-items:center;gap:clamp(8px,1.3vw,20px);flex-wrap:wrap;font-size:14.5px;font-weight:600;color:var(--text-soft)}
.nav a{color:var(--text-soft)}
.nav a:hover, .nav a.active{color:var(--text)}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 26px;border-radius:12px;font-weight:800;font-size:16px;white-space:nowrap}
.btn-sm{padding:11px 20px;border-radius:999px;font-size:15px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 28px rgba(255,31,46,0.32)}
.btn-primary:hover{color:#fff;opacity:.92}
.btn-outline{border:1px solid var(--border-strong);color:var(--text)}
.cta-right{margin-left:auto}

/* breadcrumb */
.breadcrumb{font-size:13.5px;color:var(--text-mute);padding:18px 0 0}
.breadcrumb a{color:var(--text-mute)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{margin:0 6px;color:#4c4c55}
.breadcrumb .cur{color:var(--text-soft)}

/* type */
.eyebrow{display:flex;align-items:center;gap:8px;color:var(--accent);font-weight:800;font-size:14px;letter-spacing:0.08em}
.h1{margin:16px 0 0;font-size:clamp(32px,5.4vw,58px);line-height:1.12;letter-spacing:-0.03em;font-weight:900}
.h2{margin:14px 0 0;font-size:clamp(26px,3.6vw,42px);font-weight:900;letter-spacing:-0.03em;line-height:1.18}
.h3{margin:0 0 8px;font-size:20px;font-weight:800;letter-spacing:-0.01em}
.h4{margin:0 0 6px;font-size:16.5px;font-weight:800}
.lead{margin:16px 0 0;max-width:700px;color:var(--text-dim);font-size:clamp(16px,1.3vw,18.5px);line-height:1.75}
.prose{max-width:820px;font-size:16.5px;line-height:1.85;color:var(--text-body)}
.prose h2{font-size:clamp(23px,2.6vw,30px);font-weight:900;letter-spacing:-0.02em;color:var(--text);margin:52px 0 16px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:19px;font-weight:800;color:var(--text);margin:30px 0 10px}
.prose h4{font-size:16.5px;font-weight:800;color:var(--text);margin:22px 0 8px}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:22px}
.prose li{margin:0 0 8px}
.prose strong{color:var(--text)}
.prose blockquote{margin:20px 0;padding:16px 20px;border-left:3px solid var(--accent);background:var(--card);border-radius:0 10px 10px 0;color:var(--text-soft)}
.prose table{margin:16px 0 24px;font-size:15px;border:1px solid var(--border);border-radius:12px;overflow:hidden}
.prose th,.prose td{padding:12px 16px;border-top:1px solid var(--border);text-align:left}
.prose thead th{background:var(--card-alt);color:var(--text-mute);font-size:13px;border-top:none}
.callout{background:var(--accent-soft);border:1px solid var(--accent-line);border-radius:14px;padding:20px 22px;margin:22px 0}
.callout .h4{color:#FF5C66}

/* cards / grids */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:28px}
.card-alt{background:var(--card-alt)}
.card-link{display:block;color:var(--text)}
.icon-badge{width:42px;height:42px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:900}
.biz-thumb-ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--text-mute);font-size:13px;line-height:1.5;text-align:center;padding:12px;background:repeating-linear-gradient(45deg,rgba(255,255,255,0.02) 0 10px,transparent 10px 20px)}
.tag-pill{display:inline-flex;border:1px solid var(--border-strong);color:var(--text-soft);font-size:13px;font-weight:700;padding:7px 13px;border-radius:999px}
.cat-filter{display:flex;gap:10px;flex-wrap:wrap}
.cat-pill{display:inline-flex;align-items:center;border:1px solid var(--border-strong);background:transparent;color:var(--text-soft);font-size:14.5px;font-weight:800;padding:10px 20px;border-radius:999px;cursor:pointer;font-family:inherit;white-space:nowrap;transition:background .15s,color .15s,border-color .15s,box-shadow .15s}
.cat-pill:hover{border-color:var(--accent-line);color:var(--text)}
.cat-pill.active{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 10px 28px rgba(255,31,46,0.32)}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:16px;margin-top:36px;border-top:1px solid var(--border);padding-top:26px}
.stat-num{font-size:clamp(24px,2.8vw,32px);font-weight:900;letter-spacing:-0.03em}
.stat-label{color:var(--text-mute);font-size:13.5px;margin-top:4px}

/* blog cards */
.blog-card{background:var(--card-alt);border:1px solid var(--border);border-radius:18px;overflow:hidden;color:var(--text);display:flex;flex-direction:column}
.blog-thumb{position:relative;aspect-ratio:16/10;background:linear-gradient(135deg,#1a1a20,#151519);display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:34px;overflow:hidden}
.blog-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.blog-hero{aspect-ratio:16/9;border-radius:16px;overflow:hidden;background:linear-gradient(135deg,#1a1a20,#151519);margin:28px 0 0;position:relative;max-width:820px}
.blog-hero img{width:100%;height:100%;object-fit:cover;display:block}
.blog-body{padding:22px}
.blog-cat{color:var(--accent);font-size:12.5px;font-weight:800}
.blog-meta{color:var(--text-mute);font-size:13px;margin-top:10px}

/* faq */
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px 22px;margin-bottom:12px}
.faq-item summary{font-size:16.5px;font-weight:700;display:flex;justify-content:space-between;gap:16px;align-items:center;color:var(--text)}
.faq-item summary .m{color:var(--accent);font-size:19px;flex-shrink:0}
.faq-item p{margin:14px 0 0;color:var(--text-dim);font-size:15.5px;line-height:1.75}

/* footer */
.site-footer{border-top:1px solid var(--border);background:var(--bg)}
.site-footer .grid4{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px;padding:48px 0}
.site-footer nav{display:flex;flex-direction:column;gap:10px;font-size:14.5px}
.site-footer nav a{color:var(--text-soft)}
.site-footer .label{color:var(--text-mute);font-size:12.5px;font-weight:800}
.site-footer .bottom{border-top:1px solid var(--border)}
.site-footer .bottom .wrap{padding:18px clamp(20px,5vw,40px);color:var(--text-mute);font-size:12.5px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:18px}
.brand img{width:22px;height:22px;border-radius:5px}

/* toc */
.toc{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:22px 24px;margin:0 0 36px}
.toc .h4{margin-bottom:10px}
.toc ol{margin:0;padding-left:20px;color:var(--text-soft);font-size:15px;line-height:2}

/* table compare */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:18px}
.table-wrap table{min-width:600px}
.table-wrap th,.table-wrap td{padding:16px 20px}
.table-wrap thead tr{background:var(--card-alt)}
.table-wrap thead th{color:var(--text-mute);font-size:13.5px;font-weight:700;text-align:left}
.table-wrap tbody tr{border-top:1px solid var(--border)}
.table-wrap tbody tr:nth-child(even){background:#0E0E11}
.table-wrap th[scope=row]{color:var(--text-body);font-weight:600}

/* pagination / lists */
.plain-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--accent-line);background:var(--accent-soft);color:#FF5C66;font-weight:700;font-size:13px;letter-spacing:0.04em;padding:7px 14px;border-radius:999px}

/* hero */
.hero-grid{display:grid;grid-template-columns:1.15fr 0.85fr;grid-template-areas:"head visual" "body visual";gap:clamp(28px,5vw,64px);align-items:center}
.hero-head{grid-area:head}
.hero-body{grid-area:body}
.hero-visual{grid-area:visual;position:relative;display:flex;justify-content:center}
.hero-visual-frame{width:min(380px,86vw);aspect-ratio:1/1;border-radius:32px;border:1px solid var(--border-strong);background:radial-gradient(circle,rgba(255,31,46,0.10),transparent 70%);padding:20px;display:flex;align-items:center;justify-content:center}
.hero-visual-pill{position:absolute;bottom:-14px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:8px;background:#141418;border:1px solid var(--accent-line);padding:10px 18px;border-radius:999px;font-size:14px;font-weight:700;white-space:nowrap}
.hero-guide-btn .short{display:none}

/* form */
.form-card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:clamp(22px,4vw,34px)}
.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.form-group{margin-bottom:20px}
.form-label{display:block;font-size:14px;font-weight:700;color:var(--text-soft);margin-bottom:8px}
.form-label .req{color:var(--accent);margin-left:2px}
.form-input,.form-select,.form-textarea{width:100%;background:var(--bg);border:1px solid var(--border-strong);border-radius:10px;padding:13px 16px;font-size:15px;line-height:1.5;color:var(--text);font-family:inherit}
.form-textarea{resize:vertical;min-height:150px}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--accent)}
.form-input::placeholder,.form-textarea::placeholder{color:var(--text-mute)}
.form-hint{font-size:13px;color:var(--text-mute);margin-top:7px}
.form-check{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-mute);line-height:1.6}
.form-check input{margin-top:3px;flex-shrink:0}
.form-file{width:100%;background:var(--bg);border:1px dashed var(--border-strong);border-radius:10px;padding:13px 16px;font-size:14px;color:var(--text-mute)}

.menu-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:36px;height:36px;background:none;border:none;cursor:pointer;padding:0;flex-shrink:0}
.menu-toggle span{display:block;width:100%;height:2px;background:var(--text);border-radius:2px;transition:transform .2s,opacity .2s}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-nav{display:none;flex-direction:column;background:var(--bg-alt);border-top:1px solid var(--border)}
.mobile-nav.open{display:flex}
.mobile-nav a{color:var(--text-soft);padding:14px clamp(16px,4vw,32px);font-size:15.5px;font-weight:700;border-bottom:1px solid var(--border)}
.mobile-nav a.active{color:var(--accent)}
.mobile-nav .btn{margin:14px clamp(16px,4vw,32px) 16px}

@media (max-width:640px){
  .nav{display:none}
  .cta-right{display:none}
  .menu-toggle{display:flex}
  .h1{font-size:34px}

  .hero-grid{grid-template-columns:1fr auto;grid-template-areas:"head visual" "body body";gap:16px 16px}
  .hero-head .h1{font-size:28px;margin-top:8px}
  .hero-head .hero-badge{font-size:11px;padding:5px 10px}
  .hero-visual-frame{width:132px;border-radius:24px;padding:12px}
  .hero-visual-pill{display:none}
  .hero-buttons{flex-wrap:nowrap}
  .hero-buttons .btn{flex:1;padding:12px 8px;font-size:14px}
  .hero-guide-btn .full{display:none}
  .hero-guide-btn .short{display:inline}

  .site-footer .grid4{grid-template-columns:1fr 1fr;gap:28px 20px}
}